CN104421800A - Vehicular lamp unit - Google Patents
Vehicular lamp unit Download PDFInfo
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- CN104421800A CN104421800A CN201410452384.0A CN201410452384A CN104421800A CN 104421800 A CN104421800 A CN 104421800A CN 201410452384 A CN201410452384 A CN 201410452384A CN 104421800 A CN104421800 A CN 104421800A
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- Prior art keywords
- light
- led
- substrate
- intensity distribution
- luminous intensity
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/36—Combinations of two or more separate reflectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/19—Attachment of light sources or lamp holders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
- F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/151—Light emitting diodes [LED] arranged in one or more lines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
- F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/39—Attachment thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
- F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Abstract
The present invention provides a vehicular lamp unit that reduces manufacturing cost of a light source or manufacturing cost of a headlamp by simplifying the operation of mounting light-emitting elements on a substrate. The vehicular lamp unit has a substrate (21), a light source having a plurality of light-emitting elements (L1-L9) disposed on the substrate, and an optical element (1) which emits the light from the light-emitting elements (L1-L9) to front side of the vehicular lamp unit according to a desired light distribution through an optical element (3) such as a reflector. The substrate (21) is long in a first direction (H direction). A reference portion (24) serving as a positioning reference for the optical element (3) is provided in a part of the substrate. The light-emitting elements (L1-L9) are arranged in the first direction of the substrate (1). Compared with light-emitting elements (L6-L9) which illuminate an area having low light intensity, the light-emitting elements (L4,L5) are mounted at positions closer to a reference part (24).
Description
Technical field
The present invention relates to the light fixture carrying the semiconductor light-emitting elements such as multiple LED (light emitting diode), formation light source on substrate, the vehicle lamp unit be applicable to particularly applied in the headlamp (headlight) forming desired luminous intensity distribution with high accuracy.
Background technology
In recent years, in the lamps apparatus for vehicle such as vehicle taillight, headlamp, in order to seek power saving and high-durability and adopt the semiconductor light-emitting elements such as LED as light source.Such as in patent document 1, propose the steering indicating light scheme of LED as light source.But LED is compared with vacuum tube (bulb), and amount of emitted light is little, so, in order to meet the light quantity required by this lamp, also formed power supply with multiple LED.In described patent document 1, carry multiple LED on one substrate, be built in Lamp housing by this substrate, one side guarantees the light quantity of needs thus, and one side seeks the miniaturization of lamp.
Patent document 1: Japanese Unexamined Patent Publication 2011-165651 publication
When being formed as carrying on one substrate the structure of multiple LED as the light source of vehicle lighting like this, when being formed as the structure as the light source of the steering indicating light described in patent document 1, taillight and other so-called mark lamps, the possibility that the precision of the loading position of base onboard led becomes problem is less.Namely for the light distribution pattern required by above-mentioned mark lamp and photometric distribution, it requires the high accuracy of not degree required by headlamp, so, even if there is a little error at the loading position being equipped on the LED on substrate, luminous intensity distribution precision is reduced, also mostly can in permissible range.
But, when the light source as headlamp forms above-mentioned light source, because the light distribution requirements high accuracy to headlamp, so the precision of the loading position of multiple LED just becomes problem on substrate.When namely assembling the substrate of light source relative to opticses such as speculum, irradiation lens, if produce error on the loading position of base onboard led, then this error directly reduces relevant to the luminous intensity distribution precision of headlamp, due to the reduction of this precision, to the permissible range exceeding headlamp be caused, the luminous intensity distribution precision in easy especially high luminosity region in luminous intensity distribution goes wrong.
Therefore, at present, when forming light source, when namely carrying multiple LED on substrate, require to carry out high-precision lift-launch operation, thus operation is loaded down with trivial details, and requires skilled operation.Such as, adopt when substrate carrying LED and datum hole is set in the reference position of a part for substrate, make this datum hole method of positioning, thus on the substrate successively carrying LED chimeric with the reference position alignment pin being arranged at workbench.But even if carry LED according to the method described above, be mounted in from the LED the position that datum hole leaves because carrying the thermal deformation etc. of metacoxal plate, cause and change relative to the relative position of datum hole, this will become the loading position error of LED.Therefore, when utilizing datum hole relative to optics assembling substrates, leaving in the LED on position from datum hole, with be positioned at close to compared with the LED on the position of datum hole, increase relative to the assembling position error of optics, as a result, in the headlamp manufactured, can not obtain and design same light distribution characteristic.In order to eliminate the loading position error of above-mentioned LED, when carrying LED, need to consider the distortion of substrate or consider and carry out lift-launch operation relative to the assembly error etc. of optics, the accuracy control carried in operation becomes complicated and difficult, and then occurs the problem of the manufacturing cost of light source and even the manufacturing cost increase of lamp.
Summary of the invention
Operation when the object of the present invention is to provide by being reduced at element mounted on substrate, reduce the vehicle lamp unit of the manufacturing cost of light source and even the manufacturing cost of lamp.
The present invention is a kind of vehicle lamp unit, it is characterized in that, it has the light source and this light source of assembling that to arrange on substrate and carry multiple light-emitting component and makes the optics portion that the light that penetrated by described light-emitting component irradiates to the front of vehicle with required luminous intensity distribution, described substrate is formed substrate longer in a first direction, arranging relatively described optics portion in a part for this substrate is the reference section of positioning datum, described multiple light-emitting component arrangement in said first direction, and the light-emitting component thrown light on to the high luminosity region of described luminous intensity distribution is in said first direction compared with the light-emitting component thrown light on to low luminosity region, be mounted in the position closer to described reference section.
In the present invention, the structure be preferably formed is, described multiple light-emitting component arranges in said first direction at predetermined intervals, for the second direction vertical with described first direction, is arranged on the position of the distance set respectively apart from described reference section.And in the present invention, luminous intensity distribution is dipped beam luminous intensity distribution, high luminosity region is the optical axis near zone of this dipped beam luminous intensity distribution and even the region that connects with dead line.And then the light-emitting component carrying out the illumination of distance light luminous intensity distribution is preferably included to the light-emitting component thrown light in high luminosity region.
According to the present invention, be mounted in and throw light on the high luminosity region of the light-emitting component on reference section approximated position to luminous intensity distribution, be mounted in and leave the low luminosity region of the light-emitting component position to luminous intensity distribution from reference section and throw light on, so, the light-emitting component left on position is positioned at for above-mentioned, even if produce error because the substrate after carrying deforms etc. on loading position, the assembling position in the optics portions such as relative reflection mirror departs from, and the impact caused luminous intensity distribution is also less.Thereby, it is possible to relax precision required during element mounted on substrate, thus carry out lift-launchs operation simply, and this cost required for lift-launch operation can be reduced, the cost of minimizing light source and even lamp.
Accompanying drawing explanation
Fig. 1 is that assembling is suitable for the motor vehicle of headlamp of the present invention and the three-dimensional synoptic chart of lamp unit;
Fig. 2 is the three-dimensional exploded view of the lamp unit of Fig. 1;
Fig. 3 is the top view observed from the face side of substrate;
Fig. 4 is the longitudinal sectional drawing of the assembled state of lamp unit;
Fig. 5 A is the dipped beam light distribution characteristic figure of lamp unit;
Fig. 5 B is the distance light light distribution characteristic figure of lamp unit;
Fig. 6 is the top view representing different substrate example, observe from face side.
Description of reference numerals
1 lamp unit; 2 light sources; 3 composite reflectors (optics portion); 4 Lamp housings; 5 lamp ECU; 21 substrates; 22 fixing holes; 23LED island portion; 24 first datum holes (reference section); 25 second datum holes; 31 top plate portions; 32 reflecting parts; 33 openings; 34,35 alignment pins; 37 unit speculums (unit reflecting surface); 38 fixed lobes; L1 ~ L9LED (light-emitting component); L-HL, R-HL headlamp; H direction (first direction: horizontal direction); V direction (second direction: vertical).
Detailed description of the invention
Then, with reference to accompanying drawing, be described for embodiments of the present invention.Fig. 1 represents that lamp unit of the present invention is applicable to the stereogram of the structuring concept of the embodiment of the headlamp of motor vehicle (headlight).Headlamp L-HL is set about the Vehicular body front of motor vehicle CAR, R-HL, above-mentioned headlamp L-HL, R-HL as shown in the structure in general of the left headlamp L-HL that the figure shows, Built-in light unit 1 in the Lamp housing 4 being made up of front surface diffuser 41.This lamp unit 1 is by the light source 2 formed for main body using substrate 21 and formed as the composite reflector 3 of optics, is forwards reflected the light penetrated from light source 2, through described diffuser 41, throw light on to the front of motor vehicle by composite reflector 3.Described light source 2, via wirning harness 51, is connected with ECU (electronic circuit cell) 5, by this ECU5, switches between distance light luminous intensity distribution and dipped beam luminous intensity distribution, carries out distribution controls.Described ECU5 is usually used as being used for headlamp L-HL, R-HL needless to say, also carrying out the lamp ECU of Lighting control to other lamps and form.
Fig. 2 is the three-dimensional exploded view of described lamp unit 1, described light source 2 carry on a substrate 21 multiple, in this as nine LED L1 ~ L9 of light-emitting component.Described substrate 21 is formed with the substrate for elongate rectangular on the left and right directions of level, in fig. 2, on the surface of this substrate 21 towards downside, with luminous optical axis (optical axis of injection light) towards the state in the direction (below of figure) vertical with the surface of substrate 21, carry LED L1 ~ L9 described in shaped like chips.And, the fixing hole 22 for fixing this substrate 21 on described composite reflector 3 is formed respectively at four angles of described substrate 21.In addition, as being used for the reference section that the assembling of relatively described composite reflector 3 positions in a part for substrate 21, small-bore first datum hole 24 is formed at this.And, in this embodiment, also form the second datum hole 25.Then, to have carried the state of surface towards downside of LED L1 ~ L9, the substrate 21 of this light source 2 has been fixed on the top of described composite reflector 3.
Fig. 3 is the top view observing described substrate 21 from face side (downside of Fig. 2).Be that the corner of the substrate 21 of elongate rectangular forms described fixing hole 22 at the left and right directions of level.And, the surface of substrate 21 forming not shown conductive pattern, forming portion 23, nine the LED islands (231 ~ 239) for carrying described LED L1 ~ L9 by a part for this conductive pattern.This portion 23, nine LED island (231 ~ 239) to be arranged in a straight line shape along the longitudinally (first direction of the present invention: hereinafter referred to as H direction) of this substrate 21 with required intervals.In addition, on described substrate 21, described H direction substantial middle position and in the direction orthogonal with this H direction (second direction of the present invention: hereinafter referred to as V direction), at the arrangement position with portion 23, described LED island (231 ~ 239) apart from required size positions, form the first datum hole 24 to thickness of slab direction opening.In other words, described portion 23, nine LED islands (231 ~ 239) respectively with this first datum hole 24 for benchmark, from this first datum hole 24 to H direction, V direction respectively with regulation size arrange.And, at relative first datum hole 24 on the position that V direction is identical, Yu LED island portion 231,232 close positions form the second datum hole 25, improves each LED island portion 23 (231 ~ 239) dimensional accuracy on V direction by this second datum hole 25.Then, described LED L1 ~ L9 is carried in Ge LED island portion 23 (231 ~ 239) respectively.As previously mentioned, when each LEDL1 ~ L9 is luminous from the optical axis of the light of light-emitting area injection towards the state in the direction vertical with the surface of substrate 21, the each LED L1 ~ L9 of upper lift-launch in LED island portion 23 (231 ~ 239), and by described fixing hole 22, under the state downward of substrate 21 surface, substrate 21 is assembled on described composite reflector 3, so the light penetrated from each LED L1 ~ L9 penetrates to the described composite reflector 3 of vertical lower.
Described composite reflector 3 as shown in Figure 2, be made up of elongated top plate portion 31 and reflecting part 32, top plate portion 31 stretches upwards along described H direction in the right and left of level, and reflecting part 32 extends from an edge of this top plate portion 31, namely downwards towards the edge of side, headlamp HL rear and then extends with the state that the front to headlamp HL is bending.On described top plate portion 31, corresponding to nine described LEDL1 ~ L9, longitudinally arranges with required intervals, namely identical with the lift-launch intervals of LED L1 ~ L9 intervals the opening 33 (331 ~ 339) of desired shape.And, in the substantial middle position of the longitudinally of top plate portion 31 upper surface, alignment pin 34,35 chimeric with the first and second datum holes 24,25 of described substrate 21 is respectively set.And then, at four angles that are different with this alignment pin 34,35, top plate portion 31, the fixed lobe 36 that bottom is configured to cylindrical projection, upper end is configured to screw is set respectively.
Described reflecting part 32 is corresponding with nine openings 33 (331 ~ 339) of described top plate portion 31 respectively, longitudinally is divided into nine regions, each zoning is formed as the paraboloid of revolution of concavity or curved surface approximate with it upward, is formed as the structure respectively as unit reflecting surface 37 (371 ~ 379).In this embodiment, each described unit reflecting surface 37 (371 ~ 379) is formed as making each curvature and radius of curvature there is the structure of multiple minor reflective faces set of fine difference, thus, constituent parts reflecting surface 37 (371 ~ 379) is the light reflection surface respectively with intrinsic light direction of principal axis and light distribution characteristic.Then, each opening 33 of described top plate portion 31 and the unit reflecting surface 37 corresponding with each opening 33 is formed as making respectively in pairs and as the structure of unit speculum.Therefore, in the present embodiment, form nine unit speculums by nine openings 331 ~ 339 and nine unit reflectings surface 371 ~ 379, above-mentioned unit mirror integral is formed, thus forms described composite reflector 3.
Shown in the longitudinal sectional drawing of the assembled state that this lamp unit 1 represents as Fig. 4, the surface of the substrate 2 of light source 1 downward, namely LED L1 ~ L9 mounting surface downward, be positioned on the top plate portion 31 of composite reflector 3, and be fixed on this top plate portion 31.Now, in the fixing hole 22 being arranged at substrate 21, insert the fixed lobe 36 of top plate portion 31, the fixing nut 38 with the screw-driving of this fixed lobe 36, thus, with the state fixing base 21 of the only height dimension of distance fixed lobe 36 on top plate portion 31.And, simultaneously at first and second datum hole 24 of baseplate part 21, in 25, inserting alignment pin 34,35, so, can position on the in-plane of the substrate 21 relative to top plate portion 31, i.e. H direction and V direction.Like this, substrate 21 is fixed on top plate portion 31, then nine the LED L1 ~ L9 be equipped on substrate 21 can be positioned at respectively with on nine of top plate portion 31 positions that opening 331 ~ 339 is relative.In addition, there is not gap (surplus) with alignment pin 34 in the first datum hole 24, but the second datum hole 25 is because be formed as elongated hole in H direction on V direction and H direction, so, although and the gap do not existed between alignment pin 35 on V direction, there is some gaps in H direction.
Like this, the top plate portion 31 of composite reflector 3 secures in the lamp unit 1 of substrate 21, if nine LED L1 ~ L9 are luminous, then the light sent by each LED L1 ~ L9 is forwards reflected by corresponding unit speculum.With reference to Fig. 4, after the light transmission opening 33 penetrated from LED L1 ~ L9 to vertical lower, (unit reflecting surface is referred at respective unit speculum, identical below) reflection of the front of 37 upward horizons, by after the diffuser 41 of light transmission Lamp housing 4 that reflects, the front region of motor vehicle CAR is thrown light on.Now, in composite reflector 3, by suitably designing the curve form of nine unit speculums 371 ~ 379 in advance, suitably can adjust the direction of light and diffusion or light-gathering penetrated from constituent parts speculum 371 ~ 379, thus, the light reflected by constituent parts speculum 371 ~ 379 throws light on to the region required for motor vehicle front region respectively, by the illumination light in each region of overlap, can obtain required luminous intensity distribution.
In this embodiment, in the unit speculum 371 ~ 379 shown in Fig. 2, motor vehicle CAR three unit speculums 371 ~ 373 of (being left side in fig. 2: hereinafter referred to as inner side) inside vehicle-width direction are configured to the unit speculum for distance light luminous intensity distribution, and outside vehicle-width direction, six unit speculums 374 ~ 379 of (being right side in fig. 2: hereinafter referred to as outside) are configured to the unit speculum for dipped beam luminous intensity distribution.Therefore, shown in the light distribution pattern of the dipped beam luminous intensity distribution schematically shown as Fig. 5 A and LEDL4 ~ L9 correlation, if six of outside LED L4 ~ L9 are luminous, then respectively region A4 ~ A9 is thrown light on by six unit speculums 374 ~ 379, the illumination of overlapping above-mentioned six region A4 ~ A9, thereby, it is possible to obtain the dipped beam luminous intensity distribution LoP with dead line COL.Now, each opening 334 ~ 339 of the unit speculum 374 ~ 379 corresponding with above-mentioned six LEDL4 ~ L9 as block the light penetrated from each LEDL4 ~ L9 a part shade and have an effect, particularly by suitably designing two openings 334, the edge of 335, can form the dead line COL of described dipped beam luminous intensity distribution LoP.
And, as shown in Figure 5 B, if three of inner side LED L1 ~ L3 are luminous, three then corresponding with above-mentioned LEDL1 ~ L3 unit speculums 371 ~ 373 throw light on to the region A1 ~ A3 comprising side region more top than the dead line COL of dipped beam luminous intensity distribution LoP respectively, by the illumination of overlapping above-mentioned zone A1 ~ A3, distance light luminous intensity distribution HiP can be formed on the whole.
As mentioned above, dipped beam luminous intensity distribution LoP and distance light luminous intensity distribution HiP can be formed by nine LED L1 ~ L9, especially when forming dipped beam luminous intensity distribution LoP, as shown in Figure 5A, in six the LED L4 ~ L9 in outside, be arranged on two the LED L4 be less than with the distance of substrate 21 first datum hole 24 on H direction on the position of other LED, L5 is the high luminosity region of the optical axis Lx near zone requiring luminous intensity distribution precision in dipped beam luminous intensity distribution LoP most, and be set as the region A4 to being used for being formed dead line COL, A5 carries out the light source thrown light on.On the other hand, be arranged on and be set as with other four the LEDL6 ~ L9 on described first datum hole 24 disconnected position throwing light on as the region at the moment of the dipped beam luminous intensity distribution LoP of the such high luminosity of described two LED L4, L5 and region, left and right isoperimetric edge regions A6 ~ A9 to not requiring.
Referring again to Fig. 3, nine the LED L1 ~ L9 be equipped on substrate 21 are configured to row on the longitudinally and H direction of substrate 21, so, on V direction with the distance dv of the first datum hole 24 concerning all identical nine LED L1 ~ L9, this distance dv is designed to be as far as possible short in the wiring space required for substrate 21 and the mutually non-interference scope of the light that penetrates from each LED L1 ~ L9.Therefore, even if carry each LED L1 ~ L9 on the base plate (21, be also difficult to the thermal deformation and aging distortion etc. of therefore metacoxal plate and be affected, each position of LED L1 ~ L9 on V direction can be kept accurately.This V direction is the vertical in the luminous intensity distribution formed being reflected by constituent parts speculum 371 ~ 379, so, in dipped beam luminous intensity distribution LoP, six, outside LED L4 ~ L9 can keep the position of constituent parts speculum 374 ~ 379 relatively each opening 334 ~ 339 on V direction accurately, for by block through opening 334 ~ 339, from a part for the light of LED L4 ~ L9 and the short transverse of each region A4 ~ A9 of the dipped beam luminous intensity distribution LoP formed, also can obtain high accuracy.
And, be equipped on two LED in six, the outside LED L4 ~ L9 on substrate 21, closer to the first datum hole 24, namely shorter with the distance of the first datum hole 24 on H direction LED L4, L5 is difficult to the thermal deformation and aging distortion etc. because being equipped on substrate 21 metacoxal plate 21 and is affected, more can keep above-mentioned two LED L4 accurately than other four LED, L5 is in the position in H direction.Namely the distance dha in H direction in Fig. 3 more precisely can be kept than distance dhb.This H direction is towards the horizontal direction of the light reflected by constituent parts speculum 374 ~ 379, and by these two LED L4, the region A4 that L5 irradiates, A5 is the optical axis L x near zone of dipped beam luminous intensity distribution LoP and the high luminosity region that connects with dead line COL, so, above-mentioned zone A4 can be made, A5 position is in the horizontal direction high accuracy, the sloping portion of the dead line COL formed near the optical axis L x of dipped beam luminous intensity distribution LoP can be formed in high accuracy, and can throw light on to the region A4 near the optical axis of motor vehicle direction of advance accurately.
On the other hand, other four LED L6 ~ L9 and described two LED L4 in six LED in outside, L5 compares, because longer with the distance dhb of the first datum hole 24 on H direction, so be easily affected because each LED L6 ~ L9 is equipped on the thermal deformation of substrate 21 metacoxal plate 21 and aging distortion etc., the station keeping accuracy on H direction is easily made to decline.But, because of the neighboring area that the region A6 ~ A9 irradiated by above-mentioned four LED L6 ~ L9 is dipped beam luminous intensity distribution LoP, so, the impact that the position illumination of skew on the dead line COL of dipped beam luminous intensity distribution LoP and the region near optical axis L x in H direction, i.e. horizontal direction causes is less, almost can ignore.
Also be identical for three, the inner side LED L1 ~ L3 being used for carrying out the illumination of distance light luminous intensity distribution, above-mentioned LEDL1 ~ L3 throws light on to the broad regions comprising region more closer to the top than the dead line COL of dipped beam luminous intensity distribution LoP.For V direction, identical with six, outside LED L4 ~ L9, because shorter with the distance dv of the first datum hole 24 and the second datum hole 25 on V direction, so the change in location after lift-launch is less.For the loading position in H direction, because the broad regions of above-mentioned three LED L1 ~ L3 to horizontal direction is thrown light on, so make how much to have some change in location and to become the possibility of problem less, can ignore.Therefore, even if three LED L1 ~ L3 are mounted on position that H direction separates with the first datum hole 24, make the precision of loading position on H direction become the possibility of problem also less.But, even if in this case, make to be positioned at by design and throw light on closest to the optical axis L x near zone A3 that the LED L3 of position is high to luminosity with the first datum hole 24, also can improve the luminous intensity distribution precision of optical axis L x near zone.
Like this, for being equipped on the LED left with the first datum hole 24 on position on the base plate (21, because of carry metacoxal plate 21 distortion etc. and produce LED L1 ~ L9 loading position error, produce on the position relative to composite reflector 3 and offset especially, or because of composite reflector 3 with the first datum hole 24 for producing the change in location (site error) of loading position when reference position is assembled, the impact caused luminous intensity distribution is less.Therefore, when carrying LED L1 ~ L9 on the base plate (21, for all LED l1 ~ L9, as long as carry out carrying with common precision, the change in location after carrying need not be considered.Thus, not needing the operation carried out for guaranteeing necessary precision when carrying out the operation of carrying LED L1 ~ L9, this cost required for lift-launch operation can be reduced, and the cost of light source can be reduced.
And, by considering luminous intensity distribution as mentioned above, forming the light source 2 of setting LED L1 ~ L9 loading position, according to the experiment of inventor of the present invention, when carrying LEDL1 ~ L9 in the LED island portion 23 being formed at substrate 21, can by common mode management position precision for V direction, but for H direction, to confirm on H direction with the first datum hole 24 apart from LED island portion 239 farthest, even if relative to the surplus that the size on H direction has about 0.1mm to carry LED, also desired luminous intensity distribution can be obtained.Thus, also can cancel the strict demand to precision in the operation of carrying the LED left with the first datum hole 24 on H direction, lift-launch operation can be simplified, thus reduce lift-launch cost, and the cost of light source can be reduced.In addition, carrying out management position precision by above-mentioned situation and the second datum hole 25 jointly being utilized, particularly for being positioned at the LED left with the first datum hole 24 on position, its precision on V direction can be improved.
Above-mentioned explanation is illustrated for the left headlamp L-HL of motor vehicle, and when right headlamp R-HL, the structure of the structure of lamp unit 1, i.e. light source 2 and composite reflector 3 is symmetrical structure.Just the dead line of dipped beam luminous intensity distribution LoP is at left and right headlamp L-HL, identical shape in R-HL, so six, the outside unit speculum 374 ~ 379 of composite reflector 3, be namely identical structure when right headlamp R-HL from being positioned at the structure of six unit speculums in left side and the corresponding with it and shape of opening that formed during forward observation at left and right directions.
At this, in embodiments, although form three the LED L1 ~ L3 in inner side as distance light luminous intensity distribution, six the LED L4 ~ L9 in outside are formed as dipped beam luminous intensity distribution, if but precision required by field of illumination and luminosity, the height of the positional precision required by LED loading position is sorted successively, the neighboring area of periphery > (d) the distance light luminous intensity distribution of region > (c) the dipped beam luminous intensity distribution then connected with the dead line of dipped beam luminous intensity distribution for optical axis near zone > (b) of (a) dipped beam luminous intensity distribution and distance light luminous intensity distribution, so, each LED can be made corresponding with the order of being somebody's turn to do (a) ~ (d), the distance of setting and the first datum hole 24 respectively.
Such as, although not shown, but when utilizing all L1 ~ L9, throwing light on to required luminous intensity distribution region A1 ~ A9 respectively and designing composite reflector 3, as shown in Fig. 6 (A), when arranging the first datum hole 24 at substrate 21 in the central authorities in H direction, (a) is carried in the position that this datum hole 24 is adjacent with H direction and uses LED L4, L5, L3, carries two LED L6 of (b), L7 in its both sides, and then use LED L8 in its both sides lift-launch (c), L9, and then at its both sides lift-launch (d) LEDL1, L2.
Or as shown in Fig. 6 (B), when substrate 21 forms first datum hole 24 in an end of length direction, (a) can be configured in an end of the substrate 21 close with this datum hole 24 with LED L4, thus, (b) ~ (d) LED L5 is arranged in order towards the other end, L3, L6, L7, L2, L8, L9, L1.
The either type of Fig. 6 (A), (B) is all identical with described embodiment, by LED L4, the L5 optical axis near zone A4 to dipped beam luminous intensity distribution LoP, A5 throws light on, by LED L6 side by side with it, the L7 couple of region A6 connected with the dead line of dipped beam luminous intensity distribution LoP, A7 throws light on, and then by LED L8 side by side with it, L9 is to the neighboring area A8 of dipped beam luminous intensity distribution LoP, A9 throws light on, and then, is thrown light on to the region A1 ~ A3 of distance light luminous intensity distribution HiP by LEDL1 ~ L3.Second datum hole 25 is set in above-mentioned LED and also can improves the positional precision of each LED in V direction.
In the above-described embodiment, be formed through the composite reflector 3 that is made up of the multiple units speculum arranged in the horizontal direction to the forward direction spent with vertical roughly 90 reflect penetrated by LED L1 ~ L9 light, carry out the structure of throwing light on, so, substrate 21 is formed longer in the horizontal direction, on H direction, LED L1 ~ L9 arranges on this H direction, carry on the base plate (21.This is because in dipped beam luminous intensity distribution and distance light luminous intensity distribution, due to for horizontal direction, illumination zone expands, the permission of the loading position error of LED can be expanded, but due to for vertical, illumination zone is narrow, so need the precision of the loading position error relatively improving LED.In this embodiment, by the horizontal direction, in H direction, substrate 21 formed longer, can arrange on H direction, improve the precision of all LED in the site error in V direction when carrying multiple LED.
Optics portion of the present invention is not limited to the composite reflector described in embodiment.Such as can to carry out throwing light on the optics such as speculum of this spline structure for be reflected the light penetrated by LED to the direction of the luminous optical axis along this LED by speculum, or also can for not use speculum but make it the opticses such as the lens of optically focused or diffusion after utilizing shade to block a part for the light penetrated by LED.In either case, a longer in the horizontal direction substrate arranges, carries multiple LED, the opticses such as relative reflection mirror or lens are assembled in the light fixture of this class formation of this substrate, by arranging, carrying all LED in the horizontal direction, the site error of vertical can be suppressed.And for horizontal direction, be mounted on the position close with the reference position of assembling substrates to the high-precision LED of light distribution requirements, the LED low to light distribution requirements precision is mounted in from the position that reference position is left.
In the present invention, the number as the LED of light-emitting component is not limited to nine of embodiment, goes for multiple LED as in the lamp unit of light source.In this case, the distance of the datum hole with each LED, need not can be set as predetermined distance along first direction configuration point-blank by multiple LED in a second direction respectively.And, although the reference section of the present invention simply preferred datum hole such by embodiment is formed, also can for cut a part for substrate edge benchmark recess, be throughly fixed on the benchmark projection of a part for substrate and be used for carrying out the reference pattern etc. of optical alignment.
Industrial applicibility
The present invention can be applied in and multiple light-emitting component lift-launch be formed on one substrate in the lamps apparatus for vehicle of light source.
Claims (5)
1. a vehicle lamp unit, it is characterized in that, it has the light source and this light source of assembling that to arrange on substrate and carry multiple light-emitting component and makes the optics portion that the light that penetrated by described light-emitting component irradiates to the front of vehicle with required luminous intensity distribution, described substrate is formed substrate longer in a first direction, arranging relatively described optics portion in a part for this substrate is the reference section of positioning datum, described multiple light-emitting component arrangement in said first direction, and the light-emitting component thrown light on to the high luminosity region of described luminous intensity distribution is in said first direction compared with the light-emitting component thrown light on to low luminosity region, be mounted in the position closer to described reference section.
2. vehicle lamp unit as claimed in claim 1, it is characterized in that, described multiple light-emitting component arranges in said first direction at predetermined intervals, for the second direction vertical with described first direction, is arranged on the position of the distance set respectively apart from described reference section.
3. vehicle lamp unit as claimed in claim 1 or 2, it is characterized in that, described luminous intensity distribution is dipped beam luminous intensity distribution, and described high luminosity region is the optical axis near zone of this dipped beam luminous intensity distribution and even the region that connects with dead line.
4. vehicle lamp unit as claimed in claim 1 or 2, is characterized in that, comprise to the light-emitting component thrown light in described high luminosity region the light-emitting component thrown light on distance light luminous intensity distribution.
5. vehicle lamp unit as claimed any one in claims 1 to 3, it is characterized in that, described optics portion is formed as the structure of the composite reflector arranging the multiple units speculum corresponding with described multiple light-emitting component in said first direction integratedly, is the structure that the light penetrated by each described light-emitting component by the constituent parts speculum reflection of correspondence carries out irradiating.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013183579A JP6254390B2 (en) | 2013-09-05 | 2013-09-05 | Lamp unit for vehicle |
| JP2013-183579 | 2013-09-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104421800A true CN104421800A (en) | 2015-03-18 |
| CN104421800B CN104421800B (en) | 2018-05-11 |
Family
ID=51518553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410452384.0A Active CN104421800B (en) | 2013-09-05 | 2014-09-05 | Vehicle lamp unit |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9739437B2 (en) |
| EP (1) | EP2846078B1 (en) |
| JP (1) | JP6254390B2 (en) |
| CN (1) | CN104421800B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2015050173A (en) | 2015-03-16 |
| JP6254390B2 (en) | 2017-12-27 |
| US20150062948A1 (en) | 2015-03-05 |
| EP2846078B1 (en) | 2017-04-12 |
| EP2846078A1 (en) | 2015-03-11 |
| US9739437B2 (en) | 2017-08-22 |
| CN104421800B (en) | 2018-05-11 |
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